Zirconium-amino acid framework as a green phosphatase-like nanozyme for the selective detection of phosphate-containing drugs.

The zirconium-amino acid framework MIP-202(Zr) was reported as a green phosphatase-like nanozyme for the first time. Moreover, its phosphatase-like activity can be inhibited by phosphate-containing drugs. Based on this finding, a universal fluorimetric strategy for sensing phosphate-containing drugs was developed. The detection limit was as low as 2 ng mL -1 for the model drug alendronate sodium. This strategy exhibits excellent selectivity over other non-phosphate-containing drugs and will broaden the applications of phosphatase-like nanozymes in clinical pharmacy.